verbo

Sprawl and malls are filling in the vacant lots and woodlands where we used to play; rivers and streams are culverted, channelized, and barren; and the coasts, lakesides, and mountains are spotted with trophy homes and locked gates.

He made his report following a motion that the stream be culverted.

Or it might have happened later, when the creek was culverted and the woods cut down to make way for subdivisions and shopping malls.